user
Write a design document to describe a mobile game idea.
Game Idea: A battle royale game with a superhero and villain theme.

assistant
The game is a battle royale style game in which superheroes and villains battle against each other to be the last one standing. The game is set in a massive, open world environment with various sights environment and hostile environments to traverse. Players can control various superheroes and villains, each with their own unique powers that can be used to survive in the harsh world. Players can adjust their character’s statistics, upgrade their powers, and team up online with friends in an attempt to survive and emerge as the winner. Additionally, the game will feature multiple game modes and special events such as boss fights, time-limited challenges, and dynamic events.